Comparing the McLaren 720S vs 750S vs 765LT trips up a lot of owners, because all three share the same P14 platform architecture and the same M840T twin-turbo V8 lineage, which leads people to assume they're more similar under the skin than they actually are.
In reality, each car represents a distinct point on a performance spectrum, and the differences between them go well beyond the badge on the back. Whether you're deciding which platform to buy or trying to understand what your car can realistically support in terms of modification, it helps to know exactly what separates these three.
Power Output Starts the Story, But Doesn't Finish It
All three cars use a version of the same 4.0L twin-turbo V8, but McLaren didn't get to 710, 740, and 755 horsepower by simply turning up the boost on identical hardware.
The 720S, as the original platform, produces 710 hp and 568 lb-ft of torque in its stock factory tune. The 750S picks up an additional 30 hp and a meaningful torque bump to 590 lb-ft, achieved partly through revised engine management and partly through supporting changes elsewhere in the car.
The 765LT goes further still, reaching 755 hp through a combination of a higher-capacity fuel pump, forged aluminum pistons, and a reinforced head gasket, hardware changes that exist specifically to let the factory tune run more aggressively than the 720S's internals were designed to handle.
That last point matters more than it might seem. It means the 765LT vs 720S comparison isn't just a different ECU map; McLaren built stronger internals specifically to support its higher output.
For owners considering aftermarket tuning, that's an important distinction: the 765LT's stock components already have less margin between factory output and the platform's mechanical limits than a 720S does, which is worth knowing before chasing big power numbers on any of these cars.
Weight Reduction Tells a Different Story on Each Car
Horsepower gets the attention, but in a 750S vs 720S comparison, the weight differences are arguably just as significant to how the two cars actually drive.
The 750S sheds about 30 kg (66 lbs) compared to the 720S through smaller updates throughout the car.
The 765LT goes much further, cutting roughly 80 kg (176 lbs) through extensive use of lightweight materials, a titanium exhaust system, and the removal of non-essential comfort and sound-deadening components in the name of its Longtail track focus.
That gap in approach is the clearest signal of intent: the 750S is a refinement of a road-biased supercar, while the 765LT is built around stripping weight wherever the car can spare it.
Aerodynamics and Suspension Reflect Very Different Priorities
The 720S was designed first and foremost around aerodynamic efficiency and cooling, with its teardrop cockpit and smooth surfacing optimized for high-speed stability without excessive drag.
The 750S keeps that same fundamental shape but sharpens the details, a wider front track, lighter front and rear springs, a quicker steering ratio, and a shorter final-drive ratio in the transmission all work together to make the car feel noticeably more responsive without changing its character.
The 765LT takes a different path entirely. True to its Longtail name, it adds a larger front splitter, an extended rear diffuser, and a more aggressive active rear wing, generating roughly 25% more downforce than the 720S.
That extra downforce comes at a cost, the 765LT's top speed actually drops to around 205 mph compared to the 720S's 212 mph, since the car is intentionally trading outright top-end speed for cornering grip and high-speed stability.
Suspension tuning follows the same logic: the 765LT runs a stiffer setup than either the 720S or 750S, paired with Pirelli Trofeo R tires that prioritize lap time over everyday comfort.
Braking Hardware Scales With Intent
All three platforms use carbon ceramic brakes, but the top-end options diverge.
The 765LT pairs Senna-derived front brake calipers as standard equipment, reflecting its track-first design brief.
The 750S offers a similar setup, Senna-inspired rotors and calipers with an integrated cooling system , but as part of an optional Track Brake Package rather than a standard feature.
It's a good example of how the 750S is built to let an owner dial a car up toward 765LT territory if they want it, while the 765LT simply arrives there from the factory.
McLaren 720S vs 750S vs 765LT: What It Means If You're Modifying One
Because all three cars share the same engine architecture, the tuning principles that apply to one largely apply to all three, but the available headroom is not identical.
A stock 720S has more distance between its factory output and the platform's mechanical limits than a 765LT does, simply because the 765LT is already running closer to that ceiling from the factory.
That doesn't mean a 765LT can't be safely tuned further, but it does mean the margin for error is smaller, and the supporting hardware (fueling, cooling, and the engine's internals) needs to be evaluated with that reduced headroom in mind.
Need Help Choosing the Right McLaren Platform?
If you're trying to figure out where your specific car sits on that spectrum, what's already been accounted for at the factory versus what room is left to work with, that's exactly the kind of platform-specific knowledge our team builds every calibration around.
Reach out and we can walk through what makes sense for your 720S, 750S, or 765LT specifically.
And if you're after a much higher output than a calibration alone can safely deliver, it's worth looking at our McLaren Performance Build Packages , which are built to address exactly the kind of mechanical headroom discussed above.